Alright, I need to take a 5V power source, and power a 3V EL wire unit with it through a transistor.
The EL wire unit draws 115mA, and the transistor is a BC337, 100 gain, the base is fed from a 5V pin off an arduino.
5-3=2V drop, 2/.115=17.4 Ω for the collector resistor? (do I even need that, it's so small?)
17.4*100 gain = 1.74KΩ for the base resistor?
The EL wire unit draws 115mA, and the transistor is a BC337, 100 gain, the base is fed from a 5V pin off an arduino.
5-3=2V drop, 2/.115=17.4 Ω for the collector resistor? (do I even need that, it's so small?)
17.4*100 gain = 1.74KΩ for the base resistor?